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UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549
____________________________________________________________________________________________________________________________________
FORM 8-K
CURRENT REPORT
Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934
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Date of Report (Date of earliest event reported): June 5, 2026
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PLEXUS CORP.
(Exact name of registrant as specified in its charter)
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Wisconsin |  | 001-14423 |  | 39-1344447
(State or other jurisdiction of incorporation) |  | (Commission File Number) |  | (IRS Employer Identification No.)

One Plexus Way
Neenah, Wisconsin 54956
(Address of principal executive offices) (Zip Code)
Telephone Number (920) 969-6000
(Registrant’s telephone number, including Area Code)
Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions (see General Instruction A.2. below):
☐ Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)
☐ Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)
☐ Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b))
☐ Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))
Securities registered pursuant to Section 12(b) of the Act:

Title of each class | Trading Symbol | Name of each exchange on which registered
Common Stock, $0.01 par value | PLXS | The Nasdaq Global Select Market

Indicate by check mark whether the registrant is an emerging growth company as defined in Rule 405 of the Securities Act of 1933 (§230.405 of this chapter) or Rule 12b-2 of the Securities Exchange Act of 1934 (§240.12b-2 of this chapter).
Emerging growth company ☐
If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. ☐

Item 1.01 Entry into a Material Definitive Agreement.
On June 5, 2026, Plexus Corp. (the "Company") entered into a Second Amended and Restated Credit Agreement (the "Second Amended and Restated Credit Agreement") by and among the Company, certain of its subsidiaries from time to time party thereto as borrowers (together with the Company, collectively, the “Borrowers”), the lenders from time to time party thereto, and JPMorgan Chase Bank, N.A., as Administrative Agent (the “Administrative Agent”), which replaces in its entirety the Amended and Restated Credit Agreement, dated June 9, 2022, by and among the Company, certain of its subsidiaries party thereto as borrowers, the lenders party thereto, and JPMorgan Chase Bank, N.A., as Administrative Agent.
The Second Amended and Restated Credit Agreement has a maturity date of June 5, 2031. The Second Amended and Restated Credit Agreement is comprised of a revolving credit facility under which the maximum commitment is $500 million and which, subject to the conditions set forth therein, may, at the election of the Company, be increased by $250 million to $750 million. Borrowings under the Second Amended and Restated Credit Agreement bear interest, at the Company's option, at a rate equal to an alternate base rate, Term SOFR, EURIBOR, or Daily Simple SONIA, plus, in each case, an applicable interest rate margin based on the ratio of the Company's then current consolidated total indebtedness (minus certain unrestricted cash and cash equivalents in an amount not to exceed $150 million) to consolidated EBITDA. The Company will also pay a fee on the daily unused commitments under the Second Amended and Restated Credit Agreement, based on the ratio of the Company's then current consolidated total debt (minus certain unrestricted cash and cash equivalents in an amount not to exceed $150 million) to consolidated EBITDA, of between 10 and 25 basis points.
The Second Amended and Restated Credit Agreement contains customary covenants and events of default including financial covenants requiring, in each case as of the last day of any period of four consecutive fiscal quarters of the Company, the Company not to permit (a) an interest coverage ratio consisting of the Company's consolidated EBITDA to cash consolidated interest expense to be less than 3.00 to 1.00 and (b) a leverage ratio consisting of the Company's consolidated total debt to consolidated EBITDA to be greater than 3.50 to 1.00, subject to the Company's rights to temporarily increase the leverage ratio to 4.25 to 1.00 in connection with certain material acquisitions.
The foregoing description of the Second Amended and Restated Credit Agreement does not purport to be complete and is qualified in its entirety by reference to the full text of the Second Amended and Restated Credit Agreement, which is filed as Exhibit 10.1 to this Current Report on Form 8-K and incorporated herein by reference.
Item 2.03 Creation of a Direct Financial Obligation or an Obligation under an Off-Balance Sheet Arrangement of a Registrant.
Incorporated herein by reference to Item 1.01 above.

Item 9.01 Financial Statements and Exhibits
(d) Exhibits.

Exhibit Number |  | Description
10.1 |  | Second Amended and Restated Credit Agreement, dated June 5, 2026, by and among Plexus Corp., certain of its subsidiaries from time to time party thereto as borrowers, the lenders from time to time party thereto, and JPMorgan Chase Bank, N.A., as Administrative Agent.
104 |  | Cover Page Interactive Data File (the cover page tags are embedded within the Inline XBRL document)

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SIGNATURES
Pursuant to the requirements of the Securities Exchange Act of 1934, the Registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized.

Date: June 8, 2026 |  | PLEXUS CORP.
|  | (Registrant)
|  | By: /s/ David W. Abuhl
|  | David W. Abuhl
|  | Senior Vice President and Chief Financial Officer